Block4Block Mod
by HasJamOn
Block4Block is a Fabric adventure mod that adds a block-breaking mechanic in which breaking a block costs another block, changing how resources are gathered.
What it does
Block4Block changes how resources are gathered: breaking a block costs a block from the player's inventory, so resources have to be spent to be collected. Land claims are set up with lecterns and books, and the claims can be traded between players. Vanilla Integration can be paired with it, and its design favors in-world mechanics over command-driven features that tweak the vanilla game.
The mod is built around three block types, shown with tooltips when a player hovers over them, so a player can tell them apart at a glance. It also opens new designs for technical farms and inventions. Block4Block requires Block4Block Datapack and Block4Block Plugin - Game Mode, and both must be installed so the mechanic functions correctly. Fabric API and Block4Block Plugin - Advancements are optional.
Block4Block is published for Fabric only, across six game versions 1.21.5 – 1.21.10, with 4.4 for 1.21.10 as the latest file. Only the player's game needs it, and servers run without it. The source code is public under a custom license that is not open source.
Key features
Resource cost on break
Breaking a block consumes a block, so gathering resources is a trade rather than a free action.
Land claims by lectern
Claims are set up at lecterns with books, and a claim can later be handed to another player.
Three block types
Three block types carry tooltips that explain each one when hovered, helping players tell them apart.
Technical farms and inventions
The mechanic enables farm designs and inventions that depend on the block-cost rule.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Optional 2
Use cases
Who it’s for: Players who want an adventure experience with in-universe rules instead of commands, and builders who plan technical farms around a resource cost.
How it compares
Rechiseled x Open Parties and Claims is server-side only, uses All rights reserved and targets 1.21.1, so it does not cover the 1.21.5 – 1.21.10 builds of Block4Block. SettleCraft is a server-required mod with an optional client, under the MIT License, for 1.21.1 – 1.21.11. Block4Block sits on the client only, and its source code is public under a custom license.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Block4Block Mod | Fabric | 1.21.5 – 1.21.10 | Client-side only | 2025-12-01 |
| Rechiseled x Open Parties and Claims | Fabric | 1.21.1 | Server-side only | 2026-09-08 |
| SettleCraft | Fabric | 1.21.1 – 1.21.11 | Server required, client optional | 2026-05-17 |
Questions
Which dependencies does Block4Block need?
Does the server need Block4Block installed?
Which game versions are covered?
In the catalog
Block4Block Mod is one of 19,031 Adventure mods on ModsFinder, and one of 10,052 Adventure mods for Fabric. 15,569 mods support Minecraft 1.21.10.
Similar mods
What the author says
A must have for every Block4Block player, this Mod adds tooltips on hover helping players know between the three block types in Block4Block at a glance. The three block types are: - Free to Break - Free in Claims - Block for Block
Official listing
- Modrinth page
- modrinth.com/mod/block4block-mod
- Owner
- HasJamOn
- Published
- 2025-04-04
- Updated on Modrinth
- 2025-12-01
- Facts verified
- 2026-10-15